Zirconium (pípè /zərˈkoʊniəm/ zər-KOH-ni-əm) je ipilese elegbogi pelu ami-idamo Zr ati nomba atomu 40.
Zirconium, 40Zr |
| Zirconium |
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| Pípè | /zərˈkoʊniəm/ (zər-KOH-nee-əm) |
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| Ìhànsójú | silvery white |
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| Ìwúwo átọ̀mù Ar, std(Zr) | 91.224(2)[1] |
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| Zirconium ní orí tábìlì àyè |
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| Nọ́mbà átọ̀mù (Z) | 40 |
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| Ẹgbẹ́ | group 4 |
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| Àyè | àyè 5 |
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| Àdìpọ̀ | Àdìpọ̀-d |
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| Ẹ̀ka ẹ́límẹ́ntì | Transition metal |
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| Ìtò ẹ̀lẹ́ktrọ́nù | [Kr] 4d2 5s2 |
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| Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 10, 2 |
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| Àwọn ohun ìní ara |
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| Ìfarahàn at STP | solid |
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| Ìgbà ìyọ́ | 2128 K (1855 °C, 3371 °F) |
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| Ígbà ìhó | 4682 K (4409 °C, 7968 °F) |
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| Kíki (near r.t.) | 6.52 g/cm3 |
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| when liquid (at m.p.) | 5.8 g/cm3 |
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| Heat of fusion | 14 kJ/mol |
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| Heat of | 573 kJ/mol |
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| Molar heat capacity | 25.36 J/(mol·K) |
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pressure| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | 2639 | 2891 | 3197 | 3575 | 4053 | 4678 |
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| Atomic properties |
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| Oxidation states | −2, +1,[2] +2, +3, +4 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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| Electronegativity | Pauling scale: 1.33 |
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| Atomic radius | empirical: 160 pm |
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| Covalent radius | 175±7 pm |
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 Color lines in a spectral rangeSpectral lines of zirconium |
| Other properties |
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| Natural occurrence | primordial |
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| Crystal structure | hexagonal close-packed (hcp) |
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| Speed of sound thin rod | 3800 m/s (at 20 °C) |
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| Thermal expansion | 5.7 µm/(m·K) (at 25 °C) |
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| Thermal conductivity | 22.6 W/(m·K) |
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| Electrical resistivity | 421 n Ω·m (at 20 °C) |
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| Magnetic ordering | paramagnetic[3] |
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| Young's modulus | 88 GPa |
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| Shear modulus | 33 GPa |
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| Bulk modulus | 91.1 GPa |
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| Poisson ratio | 0.34 |
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| Mohs hardness | 5.0 |
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| Vickers hardness | 903 MPa |
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| Brinell hardness | 650 MPa |
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| CAS Number | 7440-67-7 |
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| Main isotopes of zirconium |
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| Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
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| 88Zr | syn | 83.4 d | ε | - | 88Y | | γ | 0.392D | - | | 89Zr | syn | 78.4 h | ε | - | 89Y | | β+ | 0.902 | 89Y | | γ | 0.909D | - | | 90Zr | 51.45% | 90Zr is stable with 50 neutrons | | 91Zr | 11.22% | 91Zr is stable with 51 neutrons | | 92Zr | 17.15% | 92Zr is stable with 52 neutrons | | 93Zr | trace | 1.53×106 y | β− | 0.060 | 93Nb | | 94Zr | 17.38% | 1.1×1017 y | β−β− | - | 94Mo | | 96Zr | 2.8% | 2.0×1019 y[4] | β−β− | 3.348 | 96Mo |
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| references |
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